Oil-buhner



J. s. BRENNAN! OIL BURNER.

APPLICATION FILED MAY 5. 1919.

Patented Sept. 30, 1 919.

2 SHEETS-SHEET l.

QQMUMXOM John S. Brennan u II 1:11.. WASIIINKI'HIN. IL t,

1.8. BRENNAN.

OIL BURNER.

APPLICATION FILED MAY 5. 1919.

Patented Sept. 30, 1919.

2 SHEETS-SHEET 2.

JOHN S. BRENNAN, OF MILWAUKEE, WISCONSIN.

OIL-BURNER.

Specification of Letters Patent.

Patented Sept. 30, 1919.

Application filed May 5, 1919. Serial No. 294,844.

To all whom it may concern:

Be it known that I, JOHN S. BRENNAN, a citizen of the United States, andresident of Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inOil-Burners; and I do hereby declare that the fol lowing is a full,clear, and exact description thereof.

My invention relates to new and useful improvements in oil burners ofthat type shown in my copending application for patent filed Mar. 25th,1919, Serial No. 284,946, wherein oil is supplied from a constant levelsource to a burner member including a fuel trough having disposedtherein a relatively stationary incombustible wick body, regulation ofthe burning action being procured by raising and lowering the burnermember bodily to vary its relation to the fuel supply level. When theburner is not in use, its bottom is raised above the fuel supply level,and when it is desired to light the burner, its bottom is moved aconsiderable distance below the level of fuel supply to procure readyand complete impregnation of the wick body with oil, variousintermediate dispositions of the burner member effecting differentdegrees of burning action.

Practice has demonstrated that, in adjusting the normal burning positionof the burner, there is a liability for some operators to shift theburner too far downwardly and thus dispose it in lighting position, witha consequent flooding of the burner which results in a smoking andunsatisfactory operation.

It is therefore primarily the object of my invention to provide anarrangement for positively determinlng the practical limit ofhigh-burning operation of the burner which, at the same time readilypermits movement of the burner to lighting position when desired. a

It is more particularly my object to provide a detent means associatedwith the indicator dial plate and operating lever of a burner of thistype, which is releasably effective to halt burner lowering movement ofthe lever at the practical limit of its normal burning action.

With the above and other objects and ad vantages in view, my inventionresides in the novel combinations, formation and arrangement of partshereinafter more fully described and particularly pointed out in theappended claims.

In the accompanying drawings:

Figure 1 is an elevational view of the operating lever and dial plate ofa burner of the class described, showing one embodiment of my inventionassociated therewith.

Fig. 2 is a view, partly in section of the burner operating mechanism,showing another embodiment of my invention, the plane of section beingindicated by the line 2-9 of Fig. 3.-

Fig. 3 is an elevational view of what is shown in Fig. 2.

Fig. 4 is an elevational view of the lever and plate showing a stillfurther embodiment of my invention.

Fig. 5 is a sectional view on a plane indicated by the line 5-5 of Fig.4 and Fig. 6 is a sectional view similar to Fig. 5, but showing a stillfurther embodiment of my invention.

Referring now more particularly to the drawings, 10 designates a burnerbracket having its forward end down turned for se curement thereto of avertical dial plate 11, said dial plate and bracket being apertured toform a journal for an operating shaft 12. To procure rotation of theshaft and at the same time indicate the position of the burner relativeto the fuel level line, a lever bar 13 is obliquely secured to the outerend of the shaft, the major portion of the lever extending downwardly toform a handle, while the remaining portion of the lever is inclinedtoward the dial and forms an indicator. The dial plate is provided withsymbols 14 and 15 at opposite sides of the shaft for indicatingrespectively the upper and lower limits of movement imparted to theburner by the shaft 12, the burner being conventionally indicated as a.Intermediate of the symbols 14 and 15, the plate is provided with aseries of symbols 16 for indicating the various adjustments of theburning position of the burner.

My invention resides in the provision of releasable means for haltingmovement of the actuator lever when its indicating portion reachesapproximately the endmost symbol 16 adjacent the lighting-positionsymbol 15. The means shown in Fig. 1 comprises a pawl 17 intermediatelypivoted to a peripheral lug 17 of the dial plate, the outer end of thepawl being engageable with a stop 18 on the lug 17 and its inner endportion being engageable by the indicator portion of the actuator leverin its counterclockwise movement from' burning to lighting position,thus aflording a positive stop for the-lever and preventing theaccidental movement of the burner past its normal 7 maximum burningposition. Toprocure the lighting position of the burner, it is merelynecessary to rock the pawl out of the path of they lever :prior tothemovement of the lever past the pawl. In 'movement of the lever fromlighting to normal burning position, it tripsthe. pawl to permitmovement 'therepast. lhe pawl is urged to lever engaging position bygravity, andits lower end is outturned to 'fOrm a finger piece andabutment for the lever.

In the embodiment of my invention shown in Figs.- 2 and 3, a projection20 is provided onjthe face of theidial plate adjacent the endmostburning position symbol 16, this projection being taperingly increasedin width from the lighting symbol l5 and terminating in an abutmentshoulder. The actuator lever 13 is provided with a transverse slot 21adjacent its bound of securement to the shaft 12,- and the intermediateportion of a pawl lever 22 is passed through this slot and pivoted at 23to the actuator lever. One end portion of this pawl is engageable withthe shoulder of the projection 20, while the otherend portiongof' thepawl lever forms a finger piecewhich may be pressed by the hand ofthe-operator grasping the lever 13 to retract the pawl lever and permitmovement of the actuator lever past'the projection to lighting position.The pawl lever is urged to engaging. position by a leaf spring 2 bearingagainst its finger piece end portion and secured tothe actuator leverpreferablyby the means which attaches said lever to the shaft 12. Figs.5 and 6 shown still further modification wherein movement of theactuator lever from burning to lighting position is effected byovercoming a certainIspring-resistance which is effected in thepresentfinstance by a detent ball 25 urged to partially project througha restricted opening in the dial plate for engagement by the indicatorend portion of the actuator lever, this'detent-ball being engaged by aspring- 26 disposed ina housing 27 projectingfrom the rear face of thedial: plate.

As shown-in Fig; 6, this yieldable resilient detent action may beeffected by arounded Copies off this pat ent may be obtained, for

projection 28 struck from the surface of the dial plate ll, saidprojection being engageable with the indicator portion of the lever 13,movement of the indicator portion past the/projection in eitherdirection being pro cured bythe resilient yielding of the leverportion.

In burners wherein the lowering movement of the burner trough pro-curesautoiatically a spaced relation. of the burner trough and drum, as in mysaid co-pending application, my'improved releasable detent means alsoserves to prevent spacing of the drum from the burner trough in the adjus position of the burnerv burner and movable across the face of thedial member from burning to lighting positions, and a pawl pivotallycarried by one of said members and engageable with a stop portion of theother member to normally prevent movement of the burner shifting memberfrom burning to lighting position,

said pawl being movable from the path'of' said stop portion to permitsuch movement of the burner, shifting member. 2. The combination ,with aburner shift able to procure its various lighting and burning positions,of a dial plate, a burner operating lever movable across the face of thedial plate, a pawl intermediately pivoted on the dial 'plate,one endportion of the pawl being engageable by said lever in its movement fromlighting to burning position, and a stop engageable with the pawl toprevent its movement in the lighting direction of movement of the lever.

' In testimony that I- claim'the foregoing I have hereunto set my handatMilwaukee,

in the county of Milwaukee and State of JOHN s. BRENNAN.

five cents each by addrssing the Commissioner of Patents 7 Washington,1L0,"

